A device for measuring volume of spherical tanks, includes a base, four supporting rods, a driving mechanism, a rotating disc and a counterweight mechanism. The base is provided with a first through hole and a circular fixing base with a second through hole. The supporting rods are circumferentially provided on the fixing base, with a sliding rod slidably provided at the lower side. An outer end of the sliding rod is provided with a limiting plate. The driving mechanism can drive the sliding rods to move simultaneously in radial directions. The rotating disc with a third through hole is arranged on the fixing base, and is rotatably provided with a reel around which a steel tape is wound. A free end of the steel tape is provided with a balancing disc whose opposite sides are provided with laser rangefinders. The counterweight mechanism can keep the balancing disc stable.

Systems, apparatus, articles of manufacture, and methods are disclosed to detect obstructed valves in pressure relief systems. An example pressure relief valve includes an inlet port to be selectively fluidly coupled to a pressure vessel via a first shutoff valve, an exhaust port fluidly coupled to the inlet port via a valve, the valve to fluidly couple the inlet port and the exhaust port while a fluid pressure within the inlet port exceeds a threshold value, a first pressure sensor to detect a fluid pressure within the inlet port, a second pressure sensor to detect a differential fluid pressure between the exhaust port and the inlet port, and a data transmitter to transmit pressure data associated with the fluid pressures detected by the pressure sensors to a computing device.

The method for performing a hydrogen fueling simulation comprises obtaining information on at least one of a capacity of a largest hydrogen tank equipped for hydrogen fueling in a real-case scenario, a total capacity of hydrogen tanks, a supply fuel temperature of a fueling line, a supply fuel pressure, and a pressure of a hydrogen tank; extracting, from a predefined lookup table, a first pressure loss coefficient corresponding to a fueling line pressure loss coefficient that satisfies a predetermined condition in a reference case and a second pressure loss coefficient corresponding to a pressure loss coefficient for SAE test configuration in H2Fills, based on the obtained information; calculating an average density in the fueling line; calculating a third pressure loss coefficient based on the average density, a measured mass flow rate, and a pressure difference between a fuel supply pressure and a hydrogen tank pressure in the fueling line.

The present invention relates to a subsea storage system for storing a water miscible storage fluid and methods related thereto.